package com.example.demo.config;

import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 * @program: demo
 * @author: JCM
 * @create: 2023-04-24 09:25
 * @description:
 **/
public class LoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //1. 获取session
        HttpSession session = request.getSession(false);
        if(session != null && session.getAttribute("userinfo") != null) {
            return true;
        }
        // 用户未登录，重定向
        response.sendRedirect("/login.html");
        //response.setStatus(401);
        return false;
    }
}
